Air compressor



FIG. 1 is a front perspective view of an air compressor showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is a right side elevational view thereof;

FIG. 8 is a rear perspective view thereof; and,

FIG. 9 is a front perspective view thereof, the bulges depicted by means of broken lines being for illustrative purposes only and forming no part of the claimed design. 

The ornamental design for an air compressor, as shown and described. 